6 gauge aluminum for ranges

[Joseph Alexander]

Recently I have been finding homes with 6 6 6 SE wire feeding 50amp ranges with 50amp circuit breakers. 6 awg AL is only rated for 40amps at 60 dgrees, 50amps for 75d egrees cent. but what about correction factors, the whole 125% thing?

 

[iwire]

6 awg AL is only rated for 40amps! Was 6 awg aluminum ever rated for 50amps?

It was and still is rated at 50 amps @ 75 C.

Assuming both the breaker and receptacle terminals are rated 75C it is fine.

 

[kevin]

At 75degC terminal rating, the ampacity of 6-6-6-6 aluminum SER cable is 50 amps (Table 310.16). SE Cable (Art. 338) is not restricted to the 60degC ampacity rating that Type NM Cable is (Section 334.80).

 

[ryan_618]

Many ranges can be fed by a 40A breaker, in which case you can use 8AWG aluminum, if the terminals are rated 75 degrees.

 

[Jim W in Tampa]

I installed hundreds of them with 6 6 6 never ever had a problem,they passed with 50 amp breakers.

 

[George Stolz]

Joseph, welcome to the forum.

It helps avoid confusion if you post a new response to a thread that's in progress, rather than edit your original post.

Recently I have been finding homes with 6 6 6 SE wire feeding 50amp ranges with 50amp circuit breakers. 6 awg AL is only rated for 40amps at 60 dgrees, 50amps for 75d egrees cent. but what about correction factors, the whole 125% thing?

What 125% thing are you referring to?

 

[JohnJ0906]

Recently I have been finding homes with 6 6 6 SE wire feeding 50amp ranges with 50amp circuit breakers. 6 awg AL is only rated for 40amps at 60 dgrees, 50amps for 75d egrees cent. but what about correction factors, the whole 125% thing?

Was it 3-conductor wire(2 insulated hots, uninsulated neutral) or 4-conductor? You said "6 6 6"